tools/lldbmacros/scheduler.py

   1 from xnu import *
   2 from utils import *
   3 from process import *
   4
   5 # TODO: write scheduler related macros here
   6
   7 # Macro: showinterrupts
   8 @lldb_command('showinterrupts')
   9 def ShowInterrupts(cmd_args=None):
  10     """ Prints IRQ, IPI and TMR counts for each CPU
  11     """
  12     bcdata = kern.GetValueFromAddress(kern.GetLoadAddressForSymbol('BootCpuData'), 'cpu_data_t *')
  13     print "CPU 0 IRQ: {:d}\n".format(bcdata.cpu_stat.irq_ex_cnt)
  14     print "CPU 0 IPI: {:d}\n".format(bcdata.cpu_stat.ipi_cnt)
  15     print "CPU 0 TMR: {:d}\n".format(bcdata.cpu_stat.timer_cnt)
  16     if (kern.globals.machine_info.physical_cpu == 2):
  17         if kern.arch == 'arm':
  18             cdentries = kern.GetValueFromAddress(kern.GetLoadAddressForSymbol('CpuDataEntries') + 20, 'uintptr_t *')
  19             cpu_data_entry = Cast(dereference(cdentries), 'cpu_data_t *')
  20             print "CPU 1 IRQ: {:d}\n".format(cpu_data_entry.cpu_stat.irq_ex_cnt)
  21             print "CPU 1 IPI: {:d}\n".format(cpu_data_entry.cpu_stat.ipi_cnt)
  22             print "CPU 1 TMR: {:d}\n".format(cpu_data_entry.cpu_stat.timer_cnt)
  23         elif kern.arch == 'arm64':
  24                 cdentries = kern.GetValueFromAddress(kern.GetLoadAddressForSymbol('CpuDataEntries') + 24, 'uintptr_t *')
  25                 cpu_data_entry = Cast(dereference(cdentries), 'cpu_data_t *')
  26                 print "CPU 1 IRQ: {:d}\n".format(cpu_data_entry.cpu_stat.irq_ex_cnt)
  27                 print "CPU 1 IPI: {:d}\n".format(cpu_data_entry.cpu_stat.ipi_cnt)
  28                 print "CPU 1 TMR: {:d}\n".format(cpu_data_entry.cpu_stat.timer_cnt)
  29
  30 # EndMacro: showinterrupts
  31
  32 # Macro: showactiveinterrupts
  33 @lldb_command('showactiveinterrupts')
  34 def ShowActiveInterrupts(cmd_args=None):
  35     """  Prints the interrupts that are unmasked & active with the Interrupt Controller
  36          Usage: showactiveinterrupts <address of Interrupt Controller object>
  37     """
  38     if not cmd_args:
  39         print "No arguments passed"
  40         print ShowActiveInterrupts.__doc__
  41         return False
  42     aic = kern.GetValueFromAddress(cmd_args[0], 'AppleInterruptController *')
  43     if not aic:
  44         print "unknown arguments:", str(cmd_args)
  45         return False
  46
  47     aic_base = unsigned(aic._aicBaseAddress)
  48     current_interrupt = 0
  49     aic_imc_base = aic_base + 0x4180
  50     aic_him_offset = 0x80
  51     current_pointer = aic_imc_base
  52     unmasked = dereference(kern.GetValueFromAddress(current_pointer, 'uintptr_t *'))
  53     active = dereference(kern.GetValueFromAddress(current_pointer + aic_him_offset, 'uintptr_t *'))
  54     group_count = 0
  55     mask = 1
  56     while current_interrupt < 192:
  57         if (((unmasked & mask) == 0) and (active & mask)):
  58             print "Interrupt {:d} unmasked and active\n".format(current_interrupt)
  59         current_interrupt = current_interrupt + 1
  60         if (current_interrupt % 32 == 0):
  61             mask = 1
  62             group_count = group_count + 1
  63             unmasked = dereference(kern.GetValueFromAddress(current_pointer + (4 * group_count), 'uintptr_t *'))
  64             active = dereference(kern.GetValueFromAddress((current_pointer + aic_him_offset) + (4 * group_count), 'uintptr_t *'))
  65         else:
  66             mask = mask << 1
  67
  68 # EndMacro: showactiveinterrupts
  69